Ciiaeles o



(No Model.)

0. O. WILDER.

MACHINE FOR UPSETTING GOLLARS 0N RODS.

No. 365,212. Patented June 21,1887.

M Iii amoewtoz UNITED STATES PATENT Fries.

CHARLES O. \VILDER, OF INDIANAPOLIS, INDIANA.

MACHINE FOR UPSETTING COLLARS ON RODS.

SPECIFICATION forming part of Letters Patent No. 365,212, dated June 21, 1887.

(No model.)

.a citizen of the United States, residing at Indianapolis, in the county ofMariou and State of Indiana, have invented a new and useful Improvement in Forming Collars on Rods, of

which the following is a specification.

My invention relates to an improved apparatus for forming collars on rods.

The object of my improvement is to upset a red at any desired point between its two ends, thereby forming a collar or enlarged portion integral with the rod and preserving the original size and contour of the rod ad jacent to the enlargement or collar, all as hereinafter fully described.

The accompanying drawings illustrate my invention.

Figure 1 is a plan showing the dies open and the rod in position. Fig. 2 is a plan showing the position of the parts when the die has been closed upon the rod. Fig. 3 is a plan showing the position of the parts when the movement of the die has been completed and the collar formed. Fig. 1 is a section at a a, Fig. 3. Fig. 5 shows the relation of the parts ot'one-half of the die when open. Fig. 6 shows the same when closed. Fig. 7 is an elevation of the rod and collar.

My apparatus is adapted to be used on any of that weltknown class of machines having a bed-frame, to which the main portion of the die may be secured, and a reciprocating head, to which the remainder of the operating parts may be secured. As such machines are well known, I do not here illustrate the machine in full, but only such portions as are necessary to show the operation of the die.

A is the bed-frame,on which the crosshead B is reeiprocated by means of the connectingrods 0 C, which are attached to suitable driving mechanism. (Not shown.)

1) is a heavy cast-iron plate having a pair of swinging-jaws, E F, pivoted thereto at b I), the plate being secured to the bed-frameAby bolts 0.

Secured to the opposed inner faces of the jaws E and F are two pairs othalf-dics, d and e. The half-dies c are immovabl y secured to the jaws, while the half-dies d are mounted on ways formed on the jaws so as to slide longitudinally thereon. The opposed faces of the halves of the dies are grooved, as at f, Figs. 5 and 6, so as to embrace and firmly hold the rod between them when closed together. Each of the opposed faces of the half-dies c is provided with a recess, 71, forming, when the dies are closed together, an'annular chamber corresponding in shape to the collar or enlargement to be formed on the rod.

The half-dies (Z are each provided with an upwardly-projecting pin, 1).

V is a plate secured to the outer end of the die to form a gage or stop for the end of the rod. Secured to the reciprocating headB are a pair of arms, II and I, eachhaving a portion of its inner edge inclined to the line of movement, as at i, and the remaining portion parallel to the line of movement, as at 7'. Secured, also, to head 13, between the arms II and I, is a block, 70, to the upper surface of which is secured a bar, Z. The free end of bar Z is provided with the oppositely-inclined shoulders m and a and laterally-projccting lugs 0 0. Pins r1, projecting upward from plate D, limit the outward movement of the jaws E and F.

The operation is as follows: As the reciprocating head 13 moves away from plate D, the inclined shoulders m and n on bar Z come in contact with the pins 1) p and force jaws E and F apart until they come in contact with pins 1'. A further backward movement of the reciprocating head and the bar Z brings the lugs 0 0 in engagement with pins 1' and operates to separate the halfdies d from the half-dies c, said half-dies (Z being drawn backward along the jaws E and F. This brings the parts to the position shown in Fig. 1. The rod L, properly heated, is now placed between the dies, as clearly shown in Fig. 1. Head 13, carrying-arms II and I, block k, and bar I now move forward, first carrying the inclined shoulders m and a clear of pins 1),- thcn the inclined faces i i of arms II and I come in contact with the outer edges ofjaws E and F and force the jaws together, where they are held by the parallel portions j of the arms, thus tightly clamping the rod L between the opposed faces of the diesand bringing the parts into the position shown in Fig. 2. A further forward movement of the head B brings block kin contact with the outer ends of the movable half-dies (Z d, and the said half-dies d are forced toward the stationary half-dies c, and,

' the rod being firmly held in the dies, that portion of it between the movable and stationary dies is upset and forced into the recess h, thus forming the collar t, Fig. 7. The reverse'movement of head 13 brings the parts again to the position shown in Fig. 1, and the rod is removed.

I claim as my invention- 1. In'an apparatus for forming collais on rods, the combination of a pair of opposed jaws, twopairs of half-dies mounted on the opposed faces of the jaws, one pair of said halfdies being fixed in position on the jaws-and v the other pair being movable longitudinally rods, the fixed plate,the reciprocating head,

thejaws pivoted to the plate, the two pairs of half-dies mounted on the opposed jaws, one pair of said half-dies being fixed and the other pair movable on said jaws, and'having corresponding longitudinal grooves adapted to receive a rod and a recess of larger diameter than said groove, the pair of arms secured to thereciprocating head and having opposed inclined faces arranged to engage the jaws between them, and the block secured to the reciprocating head between said arms and arranged to engage the movable pair of halfdies, all combined and arranged to co-operate substantially as and for the purpose specified.

3. The combination, with the fixed plate, the reciprocating head, the jaws pivoted to the plate, and the half dies mounted on the opposed faces of the jaws so as to slide longitudinally thereon, and having each an up-.

wardly-prqiecting pin, of the bar secured to the reciprocating head, and having the oppositely-inclined shoulders and thelaterally-projecting lugs arranged to engage said pins, whereby the jaws are separated and the dies moved outwardly on the jaws, as specified.

CHARLES O. WVILDER.

\Vitnesses:

H. P. I-Ioon, V. M. H001). 

